The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2015
Filed:
May. 16, 2013
Dennis John O'rear, Petaluma, CA (US);
Russell Evan Cooper, Fairfield, CA (US);
Sujin Yean, Houston, TX (US);
Darrell Lynn Gallup, Meridian, ID (US);
Lyman Arnold Young, Oakland, CA (US);
Dennis John O'Rear, Petaluma, CA (US);
Russell Evan Cooper, Fairfield, CA (US);
Sujin Yean, Houston, TX (US);
Darrell Lynn Gallup, Meridian, ID (US);
Lyman Arnold Young, Oakland, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
Trace levels of mercury in a natural gas are reduced by scrubbing the natural gas in an absorber with an aqueous solution comprising a water-soluble sulfur compound. The water-soluble sulfur compound reacts with a least a portion of the mercury in the natural gas to produce a treated natural gas with a reduced concentration of mercury, and a mercury containing sulfur-depleted solution which can be disposed by injection into a (depleted) underground formation. The produced water extracted with the natural gas from the underground formation can be recycled for use as the scrubbing solution. In one embodiment, a fresh source of water-soluble sulfur compound as feed to the absorber can be generated on-site by reacting an elemental sulfur source with a sulfur reagent in produced water.